Lathe.



UNITED STATES Patented June 2, 196$;

PATENT OEEIc IIORRIN J. SIIEAD, OF DEFIANCE, OHIO, AND FRANK J. SHEAD, OF

CHICAGO, ILLINOIS.

LATHE.

EELECIFIGATION forming part-of Letters Patent No. 730,053, dated {Tune 2, 19053.

I Application filed January 13, 1903- Serial No. 138,886. (No modeh) and State of Ohio, and FRANK J. SHEAD, a

resident of Chicago, in the county of Cook and State of Illinois, citizens of the United States, have invented a new and Improved Lathe, of which the following is a full, clear, and exact description.

The invention relates to woodworking Inaohinery, and more particularly to lathes having devices for holding the body of a pail, tub, or like article in position on the lathe-spindle while turning the exterior face of the said body.

The object of the invention is to provide a.

new and improved device for more easily and quickly securing on the spindle of a pail-lathe and releasing therefrom pails or similar articles to be turned off on their exterior "surfaces and for quickly and easily removing from the article to be turnedthe truss-hoop in which the rough staves are. assembled and temporarily held.

The invention consists of novel features and parts and combinations of the same, as will be more fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings, forming a part of this'specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure l is a perspective view of the improvement, showing a pail-body in position between two retaining-heads on the spindle. Fig. 2 is a plan view of the same, parts being in section, showing the outer retaining-head disconnected from the spindle and carried by the tail-stock. Fig. 3 is a face View of the outer removable retaining-head. Fig. tis an enlarged side elevation of the'outer end of the spindle for receiving the outer removable retaining-head, parts being in section; and Fig. 5 is a sectional side elevation of the clampinghead on the line 5 5 of Fig. 3.

The bed A of the lathe is provided with a head-stock A, in which is journaled a spindle B, carrying inner and outer retaining-heads O and D, between which the bodyE of apail,

tub, or other article is clamped, the bodybe ing formed of assembled rough staves temporarily held in place by the usual truss-hoop F until the body is firmly clamped between the heads 0 and D, as hereinafter more fully described.

When the body E is securely clamped between the retaining-heads, it rotates with the spindle B, and the truss-hoop F being removed the exterior surface of the body E is turned off by the use of atool Gr, mounted on a tool-postG, held to slide in the usual manas indicated in Fig. 2.

The inner retaining-head is loosely mounted on the inner portion of the spindle B, while the outer retaining-head is removably held on the outer reduced portion 13 of the spindle B, and in order to brin g the outer removable head D to a clamping position onthe spindle and lock it thereto, and to. unlock it and remove it from the spindle, the following device is provided: A sleeve H is secured on a .ner on a guideway G attached to the bed A, I

tail-stock I, mounted to slide longitudinally in suitable guideways A arranged on'the bed A', and a hand-lever J, under the control of the operator, is fulcrumed on the bed and connected by a link J with the tail-stock I to enable the operator to movethe tail-stock, and with it the sleeve H, holding the clampingheadD to and from the spindle, as hereinafter more fully described.

The hub of the clamping-head D is adapted to fit into the sleeve H, as plainly shown in Fig. 2, and the said hub is provided with a radially-extending lug D, adapted to pass into a bayonet-slot H, formed in the sleeve H to lock the retaining-head D in position in the sleeve and allow of moving the said head D to and from the spindle on the operator manipulating the hand-lever J correspondingly to slide the tail-stock forwardor backward. In the wall of the bore of the hub of the retaining-head D are formed longitudinally-extending grooves D (see Figs. 3 and 5) for the passage of a pin B, held diametrically in the reduced outerend B of the spindle B, and the said pin B is adapted to engage camfaces D formed on the outer face of the hub of the head D. (See Figs. 3 and 5.)

Now when the retaining-head D is supportedand locked in the sleeve H of the tail-' stock I, as indicated in Fig. 2, then the said head stands a distance from the outer end of thesp ind le 13 to perm it of convenientlyplacil1g the body E in position on the inner retaininghead. C, and then by the operator moving the hand-lever .I from the right to the left the tail-stock I, sleeve II, and retaining-head I) are moved forward to engage the hub of the retaining-head l) with the reduced end B of the spindle, at the same time bringing the retaining-head I) in clamping position on the outer end of the body E to clamp the said body between the heads (l and D.

It is understood that the bayonet-slot IIis so arranged relative to the .lug D, slots D and pin B that when the head D is moved forward, as described, the grooves D are in position to allow of the passing through of the ends of thepin 13' to finally bring the ends of the pin to the beginning portions of the cam-faces l). The operator now turns the spindle B by the use of a hand-wheel K, secured on the spindle, in the direction of the arrow (4, so that the lug D passes from the angular portion of the bayonet-slot II into the longitudinal part thereof, and at the same time the pin 13 passes onto the cam-faces D" to force the clamping-head D in firm contact with the end of the body E to securely clamp the body in position between the heads C and D. The operator now imparts a swinging motion to the hand-lever J from the left to the right, so that the tailstock I and its sleeve II are moved rearward, thus disengaging the hub of the clamping-head D, the lug D passing out of the bayonet-slot II. During the return movement of the tailstock I the truss-hoop F is disengaged from the body E, and for this purpose a hook N is provided, fulerumed at N on the side of the tail-stock and extending longitudinally, so that when the tail-stock I is moved forward then the hook N engages the truss-hoop F, and when the tail-stock I is moved outward, as above explained, then the hook pulls on the truss-hoop F, and thereby draws it over the small end of the body E, thus leaving the body E completely free at its peripheral surface for the turning-tool G to turn the body exteriorly.

The hook N is yieldingly supported in an uppermost position by a spring N and the upward movement of this hook is limited by an adjustable set-screw N, held on the tailstock I and engaging the heel of the said hook.

In order to readily adapt the device for bodies of different lengths, it is necessary to adjust the head 0 on the spindle B, and for this purpose a spacing-collar is provided, made in two sections L and L, screwing one on the other and interposed between the wheel K and the hub C of the head C, as plainly indicated in Figs. land 2. By screwing the sections L and. L of the spacingcollar inward or outward more or less length is given tothe said collar to bring the head C nearer to or farther from the end of the spindle ll. After the body E is turned exteriorly by the tool G a hoop is drivento position on the body, and then the operator swings the hand-lever J again from the right to the left to move the tail-stock I forward for its sleeve II to engage the hub of the retail'ling-hcad D. The operator now turns the handwheel K in the inverse direction of the arrow a to move the lug D into the transverse portion of the bayonet-slotlElI and to disengage the ends of the pin 13 from. the cam-faces D, so that the ends of the pin, l3 abut against the base ends of the cam-faces D and stand in register with the slots 1) in the hub of the retaining-head D. The oper ator now moves the handle J from the left to the right, so that the retaining-head D moves with the sleeve [I as it is locked thereto by the lug D engaging the bayonetslot II, and consequently the head D is removed from the reduced end of the spindle B to allow of removal of the body E. The above-described operation is then repeated that is, another body is 'i nserted after which the clamping-head D is moved forward to engage the spindle and the body and to remove the truss-hoop F by the hook N, as before explained.

From the foregoing it will be seen that the means for clamping the body E in position is very simple in construction, and by having the means described for supporting and earrying the clamping-head D to and from the spindle it takes but very little time to clamp the bodyin position upon and remove it from the lathe after it is turned.

It is understood that when the outer retaining-head D is forced up against the outer end of the body E then the inner end thereof is firmly pressed against the inner retaininghead (3, which in turn presses against the spacing-collar L L, abutting against the hand-wheel K, fixed on the spindle 1 Thus when the outer retaining-head I) is'locked. in place on the outer end of the spindle the heads 0 and D, the body E, and spacing-collar L L revolve in unison to allow turning off of the exterior surface of the body E by the tool G. \Vhen the outer retaining-head is unlocked and removed from the end of the spindle, then the head C revolves loosely on the spindle l to permit of conveniently adjusting the body E in position on the head U or removing it from the spindle ll.

The reduced end B of the spindle is preferably a separate piece secured to the spindle by a pin. 13 or other device, as plainly indicated in Figs. 2 and -l. The reduced end 13 can thus be readily removed for repairs, if necessary, and it can be easily fitted onto the spindles of lathes already built.

Having thus described our invention, we claim as new and desire to secure by Letters Patent-- 11.. A lathe having a spindle, an inner retaining-head on the inner portion. of the spindle, an outer retaining-headfor removable connection with the spindle a distance from the said inner retaining-head, to clamp the body of the article between the heads, and means for carrying the outer head to and from the spindle and locking and unlocking it thereon, as set forth.

2. A lathe having 'a spindle, an inner retaining-head on the inner portion of the spindle, an outer retaining-head for removable attachment to the spindle a distance fromthe said inner retaining-head, to clamp the body of the article betweenthe said heads, and a movable tail-stock having means for supporting the said outer retaining-head, to move the latter to and from the spindle, as set forth.

3. A lathe having a spindle, an inner retaining-head on the inner portion of the spindle, an outer retaining-head for removable attachment to the spindle a distance from the inner retaining-head, to clamp the body of the article between the said heads, a movable tail-stock having means for supporting thesaid outer retaining-head, to move the latter to and from the spindle, and means on the said tailstock for engaging a truss-hoop on the body of the article while moving the outer retaining-head in position, the said means removing the truss-hoop from the said bod on the return movement of the tailstock, as set forth. 7

4:. A lathe having a spindle, an inner retaining-head on the inner portion of the spindle,

"an outer retaining-head for removable connection with the spindle a distance from the inner retaining-head, to clamp the body of the article beween the heads, and means for carrying the outer retainin g-head to and from the spindle and locking and unlocking it thereon, the said means consisting of a pin through the end of the spindle, the ends engaging cam-faces on the said outer retaininghead, as set forth.

5. A lathe having a spindle, an inner retaining-head held loosely on the inner portion of the spindle, an outer retaining-head for removable connectionwith the spindle a distance from the inner retaining-head, to clamp the body of the article between the heads, means for carrying the outer retaining-head to and from the spindle and locking and unlooking it thereon, and means for adjusting the inner retaining-head lengthwise on the spindle, to vary the distance between the said heads, as set forth.

6. A lathe having a removable retaininghead, a movable tail-stock provided with a fixed sleeve for the reception of the hub of a retaining-head, and a locking device for locking the hub of the head in the sleeve, as set forth.

7. Alathe having a retaining-head provided on its hub with a lug, and amovable tail-stock having a fixed sleeve provided with a bayonet-slot for engagement by the said lug, as set forth.

8. A lathe having a spindle, a retaininghead removably connected with the'spindle, a

tail-stock movable toward and from the said.

spindle, and means carried by the tail-stock for engaging the retainingehead' to move it into and out of engagement with the spindle, as set forth;

9. A lathe having a spindle, a tail-stock movable toward and from the said spindle, a retaining-head having a detachable connection with the spindle and removably carried by the tail-stock to the said spindle, to engage the latter, and a locking device on the said retaining-head and tail-stock, to lock the same together, as set forth.

10. A lathe having a spindle, a tail-stock movable toward and from the said spindle, a retaining-head removably carriedby the tailstock to the said spindle, to engage the latter,

a locking device on the said retaining-head and tail-stock, to lock the same together, and locking means on the said spindle and retaining-head, to lock the same together, the said locking means being so arranged relative to c the said locking device that on turning the.

spindle the one looks and the other unlocks, as set forth.

11. A lathe having a spindle, a tail-stock movable toward and from the said spindle, a retaining-head removably carried by the tailstock to the said spindle, to engage the lat' ter, and a locking device on the said retaining-head and tail stock, to lock the same to gether, the locking device consisting of a lug on the hub of the retaining-head and a sleeve fixed on the tail-stock and adapted to be en gaged by the hub of the retaining-head, the

sleeve having a bayonet-slot adapted to be engaged by the said lug, as set forth.

12. A lathe having a spindle provided with a pin, a tail-stock having a sleeve formed with abayonet-slot, means for moving the tail-stock toward and from the spindle, a retaining-head having a hub provided with a lug, and a camface, the said hub being adapted to engage the said sleeve and its lug and the said bayonet-slot; and the pin on the spindlebeing adapted to engage the said cam-face, as set forth.

13. A lathe provided with a movable tail stock having means for engaging the trusshoop on the article to be turned, and to remove the truss-hoop, as set forth.

14. A lathe having a movable tail-stock, anda hook pivoted thereon and adapted to engage the truss-hoop of an article, to pull the truss-hoop off the article, as set forth.

15. A lathe having a movable tail-stock, a hook pivoted thereon and adapted to engage the truss-hoop of an article, to pull the trusshoop off the article, and means for adjusting the said hook, as set forth. I

16. Alathe having a spindle, an inner re-v taining-head on the spindle, an outer retaining-head for removable connection with-the spindle, and means for supporting theouter retainingrhead, moving it to the. spindleand ICC &

looking it thereon on turning the spindle, as set forth.

1?. A lathe having a spindle, an inner retaining-head on the spindle, an outer retaining-head for removable connection with the said spindle, supporting means for supporting the said outer retaining-head and moving it to and from the spindle, and means for locking and unlocking the said outer retaininghead 011 the said spindle and on the said supporting means, as set forth.

18. A lathe having a spindle, a retaininghead loose thereon, and a sectional spacingcollar 011 the spindle, between the hub of the said head and a part fixed on the spindle, as I; set forth."

I11 testimony whereof We have signed our names to this specification in the presence of witnesses.

LORRIN J. SHEAD. FRANK J. SHEAD.

\Vitnesses as to Lori'in J. Shead:

CHARLES SEYMOUR, GEO. A. ENsIGN.

\Vitnesses as to Frank J. Shead:

RALPH O. SHEAD, HOWARD V. SHEAD. 

